Which characteristic of life is best shown by this diagram?

Changes occur in an organism as it grows and develops.

Which of the following is an observation rather than an inference?

The hoof print alongside the trail looks like a deer hoof.

Which of the following is an example of an observation?

A fly is caught in a spider web.

Which statement best explains why these cells have structural differences?

The cells have different functions.

Which one of the statements is an inference?

It must have rained this morning because the soil is wet.

Which is NOT one of the 7 characteristics of life?

Water is the primary compound on all organisms.

Which is NOT one of the 7 characteristics of life?

The ability to produce heat and movement.

Which characteristic is shared by all prokaryotic and eukaryotic organisms?

The need for a source of energy.

Which sequence represents the correct order of levels of organization found in a complex organism?

Organelles→ cells→ tissues→ organs→ organ systems

Which statement is a hypothesis?

When an enzyme is introduced into a reaction the rate will increase 100%

Which statement best describes how the structure of the alveoli allows the lungs to function properly?

Increase the surface area of the lungs, allowing for efficient gas exchange

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Biology 1A - Unit 1 - Biology Basics

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Questions 20

Answers

1
Which characteristic of life is best shown by this diagram?
Changes occur in an organism as it grows and develops.
An organism is made of one or more cells.
DNA is the genetic code in an organism.
An organism responds to changes in its environment.
2
Before conducting an experiment, you should have
List of equipment needed
Procedure
Conclusion
List of safety precautions
3
Which diagram best represents the levels of organization in the human body?
B
D
A
C
4
When a dog pants when it is overheated. This change allows the body to be cooled. These statements best illustrate
Homeostasis
Synthesis
Excretion
Locomotion
5
Which of the following is an observation rather than an inference?
The thick canopy of tree leaves keeps the understory from growing.
The hoof print alongside the trail looks like a deer hoof.
The yellow leaves have stopped producing green chlorophyll.
The Chipmunk has stored food and its cheek pouches.
6
The function of which human organ is most like the cell walls of bacteria?
Skin
Liver
Pancreas
Heart
7
Process by which a cell undergoes maturation to change its structure and function.
metabolism
homeostasis
differentiation
autotrophic
8
Which of the following is an example of an observation?
A spider spins a web to catch its food.
A fly is caught in a spider web.
Why does a spider spin a web?
What time of day is best for finding a spider web?
9
Which statement best explains why these cells have structural differences?
The cells have different functions.
The cells evolved in different organisms.
One of the cells develops into the other type of cell.
One of the cells is more primitive than the other cell.
10
A scientist measured the height of ten tomato plants over a three week period. This information is considered:
Qualitative Data
Quantitative Data
A Hypothesis
An Inference
11
Which one of the statements is an inference?
If soil contains high levels of salt the plants will die.
It must have rained this morning because the soil is wet.
All living things are composed of cells.
The temperature reading on the thermometer is 21oC.
12
Which is NOT one of the 7 characteristics of life?
Growth and Development
Obtaining and using energy
Water is the primary compound on all organisms.
All organisms are composed of one or more cells
13
Which level of organization is the most complex?
Organ system
Tissue
Organ
cell
14
Which level of biological organization is the simplest level at which structure can support life functions?
Organ system
Cell
Tissue
Organelle
15
Which is NOT one of the 7 characteristics of life?
The ability to reproduce
Maintaining a stable internal state called homeostasis
Response to stimuli in the environment
The ability to produce heat and movement.
16
Which characteristic is shared by all prokaryotic and eukaryotic organisms?
The need for oxygen for respiration
The ability to reproduce asexually.
The ability to make their own food.
The need for a source of energy.
17
Which sequence represents the correct order of levels of organization found in a complex organism?
Organelles→ cells→ tissues→ organs→ organ systems
Organs→ organ systems→ cells→ tissues→ organelles
Tissues→ organs→ organ systems→ organelles→ cells
Cells→ organelles→ organs→ organ systems→ tissues
18
An explanation for a wide range of observations, supported by many different lines of evidence?
Hypothesis
Law
Theory
Principal
19
Which statement is a hypothesis?
Introducing an enzyme did not increase the rate of the reaction.
When an enzyme is introduced into a reaction the rate will increase 100%
The presence of an enzyme increased the reaction rate.
The reaction rate increased 100% once the enzyme was introduced.
20
Which statement best describes how the structure of the alveoli allows the lungs to function properly?
Increase the surface area of the lungs, allowing for efficient gas exchange
They increase the amount of energy transferred from the lungs to the blood
They increase the volume of the lungs, allowing more oxygen to be inhaled
They increase the flexibility of the lungs as they expand during inhalation

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